Feud Between President Trump And NFL Heats Up09:41

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Buffalo Bills players kneel during the national anthem prior to an NFL football game against the Denver Broncos, Sunday, Sept. 24, 2017, in Orchard Park, N.Y. (Jeffrey T. Barnes/AP)This article is more than 2 years old.

NFL players and owners continue to react Monday after President Trump's weekend tweets about how players who decide to kneel or sit out during the national anthem should be suspended or fired. Players and owners protested in a variety of ways Sunday at football games around the country, while some fans booed from the stands.